KR100771338B1 - Peeling apparatus of protectin sheets for printed circuit board - Google Patents

Abstract

An apparatus of peeling a protective sheet for a printed circuit board is provided to improving manufacturing efficiency by peeling the protective sheet while an upper portion of the protective sheet is securely clamped by a suck-in bar and a sheet clamp. A PCB(Printed Circuit Board) is vertically introduced into a chamber(10). A protective sheet is attached on the oneside of the PCB. An elevation member(20) includes a guide shaft, which is vertically implemented on one side of the chamber. A clamping member(30) includes a suck-in bar and a sheet clamp. The suck-in bar is elevatably implemented along the guide shaft and selectively moved on the PCB in a horizontal direction. The sheet clamp is hinge-coupled with an upper portion of the suck-in bar and encloses the protective sheet and the suck-in bar. A substrate support member(40) is elevatably implemented on the chamber and selectively fixes an upper end of the PCB.

Description

Protective sheet peeling apparatus of a circuit board {PEELING APPARATUS OF PROTECTIN SHEETS FOR PRINTED CIRCUIT BOARD}

1 is a cross-sectional view showing a protective sheet peeling apparatus of a circuit board according to the present invention;

Figure 2 is a cross-sectional view for explaining the operating state of the adsorption bar for the circuit board loaded in the present invention,

Figure 3 is a cross-sectional view for explaining the operating state of the seat clamp in the present invention,

4 is a cross-sectional view for explaining an operating state of the substrate holding means in the present invention;

5 is a cross-sectional view for explaining a peeling completion state of a protective sheet in the present invention,

6 is a cross-sectional view showing another embodiment of a protective sheet peeling apparatus of a circuit board according to the present invention;

<Description of the symbols for the main parts of the drawings>

1: Protective sheet peeling device 10: Chamber

20: lifting means 21: lifting motor

23: guide shaft 30: clamping means

31 body 32 horizontal cylinder

33: adsorption bar 35: seat clamp

37 vertical cylinder 40 substrate holding means

41 lifting cylinder 43: tongs

The present invention relates to a protective sheet peeling apparatus of a circuit board, and more particularly, to peel off the protective sheet for protecting the surface of the insulating adhesive film forming the insulating layer of the circuit board by an automated process to improve the standardization of work and the yield. The present invention relates to a protective sheet peeling apparatus for a circuit board.

In general, a printed circuit board (PCB) serves to easily connect various electronic devices according to a predetermined frame, and is widely used in all electronic products from home appliances to high-tech communication devices including digital TVs. As components, they are also classified into general-purpose PCBs, module PCBs, and package PCBs, depending on the purpose.

In other words, the printed circuit board is formed by attaching a thin plate such as copper to one side of a phenolic resin insulating plate or an epoxy resin insulating plate, and then etching it according to the wiring pattern of the circuit (corroding and removing only the circuit on the line) to form a necessary circuit. They are formed by drilling holes for attaching them.They are classified into single-sided boards, double-sided boards, and multi-layered boards according to the number of wiring circuits. With the development of the industry, ultra-thin printed circuit boards (thickness of 0.04mm to 0.2mm) are widely used.

Such a printed circuit board has a cross-section used for a relatively simple electronic device, but recently, a double-sided board having a circuit formed on both sides and interconnected through a through hole, or a multilayer in which it is expanded into a plurality of layers as well as both sides. Substrates are increasingly used.

Looking at the manufacturing method of a conventional substrate briefly, using a cladding plate coated with a copper foil having a thickness of μm on the insulator plate, pre-treatment step, through-hole processing step, electroless plating step, Circuit printing step, etching step and post-treatment step.

Here, the pretreatment step is to prepare a full-fledged PCB manufacturing process by cutting the cladding disc, to form a through hole using a drill in the cladding disc cut to a suitable size in the pretreatment step, and then formed in the step by electroless plating A thin film of copper foil is formed on the through-hole surface to enable later electrocopper plating.

Subsequently, in the circuit printing step, a photosensitive film is coated on the cladding plate, followed by exposure and development to mask the remaining portions except the copper circuit portion and the through hole portion of the predesigned wiring diagram, and then form solder plating or nickel and gold plating thereon. To form a protective film to protect the copper foil of the circuit portion, and then, in the etching step, the photosensitive film masking is peeled off, and the copper foil of the non-circuit portion is etched to leave only the circuit wiring portion, and the solder plating is peeled off when solder plating is applied. .

In the post-treatment step, the substrate is manufactured through intermediate inspection, external processing, and final inspection.

On the other hand, in a conventional printed circuit board manufactured by the above process, the flexible circuit board suitable for miniaturization and light weight of electronic products due to its thin thickness and good flexibility, the insulating adhesive to form an insulating layer in the form of a circuit pattern It is a structure to which a film adheres.

Here, the insulating adhesive film is a member in the form of a film having a predetermined thickness including an adhesive material, thereby forming an insulating layer by being adhered to the circuit board by applying heat and pressure in a vacuum state.

At this time, since the insulating adhesive film is a state in which a thin protective sheet is attached to the surface protection, the protective sheet protecting the insulating layer surface must be removed in order to proceed to the next step of the circuit board on which the insulating layer is formed.

However, conventionally, the removal of the protective sheet is entirely dependent on the manual work of the operator, and thus requires a large number of workers, and the operator must peel off the protective sheet with the other hand while holding the circuit board with one hand. In addition, the accuracy of the operation is also very inefficient, as the work speed is very slow.

In particular, since there is a difference in skill of each operator, there is a problem in that the defective rate of the product is increased by causing circuit damage due to careless handling of the circuit board and uneven surface due to damage of the insulating layer during peeling of the protective sheet.

The present invention was created to solve the problems of the prior art as described above, and an object of the present invention is to stably and quickly peel a protective sheet attached to a circuit board loaded into a frame, thereby ensuring a good yield of a product and reliability of quality. It is to provide a protective sheet peeling device of a circuit board that can increase the.

In order to achieve the above object, a protective sheet peeling apparatus for a circuit board according to the present invention includes a chamber in which a circuit board with a protection sheet is vertically charged on one surface thereof, and a guide shaft installed vertically on one side of the chamber. An elevating means, an ellipsing bar installed to be capable of elevating along the guide shaft, and selectively moving horizontally to the upper side of the side of the circuit board for adsorption; and a protective sheet adsorbed by being selectively hinged and pivoted on the upper side of the adsorption bar. And clamping means including a seat clamp for clamping the portion of the suction bar and the suction bar, and a substrate holding means for raising and lowering the upper portion of the chamber and selectively clamping the upper portion of the circuit board. It is characterized by that.

As a preferable feature of the present invention, the elevating means is provided on one side of the chamber to selectively generate the driving force in the forward and reverse direction, the elevating shaft having a guide shaft which is screwed on the outer peripheral surface and screwed with the clamping means It's in being a motor.

In another preferred aspect of the present invention, the suction bar of the clamping means is a cylindrical member connected to the tube and the vacuum pump installed on one side of the chamber, the vacuum pressure is applied at equal intervals on the surface facing the circuit board The adsorption hole to be formed is formed.

As a still another preferable feature of the present invention, the seat clamp of the clamping means is provided with a semicircular arc-shaped contact portion having a curvature proportional to the curvature of the suction bar.

In another preferred aspect of the present invention, the clamping means has a through hole through which the guide shaft of the elevating means is formed and is disposed opposite to both sides with a circuit board interposed therebetween, and installed on one side of the main body and the suction And a vertical cylinder including a horizontal cylinder configured to move the rod coupled and retracted in the horizontal direction, and a rod mounted at one side of the main body and hinged at the end of the seat clamp so that the rod rotates in interlocking motion. Is in.

In another preferred aspect of the present invention, the substrate holding means is provided above the inside of the chamber, and is selectively provided with an elevating cylinder for releasing the rod above the circuit board, and installed at the rod end of the elevating cylinder by an actuator. And tongs for selectively biting and fixing the exposed upper and lower sides of the circuit board by being opened or pinched left and right.

In another preferred aspect of the present invention, the chamber is provided with an electrostatic eliminator for removing static electricity generated when the protective sheet is peeled to the upper side of the clamping means.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, the terms or words used in this specification and claims are not to be interpreted in a conventional and dictionary sense, and the inventors may appropriately define the concept of terms in order to best explain their invention in the best way possible. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention based on the principle that the present invention.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of a protective sheet peeling apparatus of a circuit board according to the present invention will be described in detail.

1 is a cross-sectional view showing a protective sheet peeling apparatus of a circuit board according to the present invention. As shown in the drawing, the elevating means 20, the clamping means 30, and the substrate holding means are formed inside a chamber 10 forming an outer body. 40 is a configuration to be installed.

FIG. 2 is a cross-sectional view for explaining an operating state of a suction bar with respect to a circuit board loaded in the present invention, wherein the clamping means 30 is applied to the protective sheet s of the circuit board p loaded into the chamber 10. The adsorption bar 33 has shown the state which performed vacuum adsorption.

3 is a cross-sectional view for explaining the operating state of the seat clamp in the present invention, the seat clamp 35 is rotated to the upper surface of the adsorption bar 33, the one end of the protective sheet (s) is sucked mechanically clamped state Indicates.

4 is a cross-sectional view for explaining the operating state of the substrate holding means in the present invention, showing a state that the bite fixed to the upper portion of the circuit board p, the protective sheet (s) is peeled off.

FIG. 5 is a cross-sectional view for explaining a peeling completion state of the protective sheet of the circuit board in the present invention, in which the clamping means 30 descends and the protective sheet s is completely peeled from the circuit board p. have.

Referring to these drawings, the protective sheet peeling apparatus 1 of the circuit board of the present invention will be described. In the flexible circuit board p to which the protective sheet s is peeled off according to the present invention, an insulating adhesive film is attached to one or both surfaces thereof. Thus, heat and pressure are applied to form an insulating layer. At this time, the insulating adhesive film is a configuration in which a protective sheet for protecting the insulating layer surface is attached to the surface and this configuration is similar to the known flexible printed circuit board (p).

However, the protective sheet (s) in the present invention is provided with a larger area than the circuit board (p) in order to be easily peeled off on the circuit board (p), preferably the upper portion of the circuit board (p) It is provided to be able to protrude upward.

The protective sheet peeling apparatus of the circuit board p of the present invention which peels off the circuit board p having such a configuration largely forms an external body, and the circuit board p is loaded therein to peel off the protective sheet. The chamber 10 is provided with a variety of components to be installed, the elevating means 20 is provided in the chamber 10 to provide the elevating drive force and the driving force is received from the elevating means 20 to the vertical direction and The lower end of the clamping means 30 which clamps the protective sheet s of the circuit board p by the lowering is provided on the upper side of the inside of the chamber 10 and is separated from the upper end side of the circuit board p. It consists of the substrate holding means 40 which performs biting fixing with respect to.

As shown in the figure, the chamber 10 is a member having a substantially box shape, and is composed of a plurality of horizontal frames, vertical frames, and panels, and preferably provided with a structure that blocks foreign substances from entering.

As shown in FIG. 6, the chamber 10 having such a configuration includes an electrostatic eliminator 50 on one side of an inner side to remove static electricity generated when the clamping means 30 to be described later peels off the protective sheet s. ) Is preferably installed, and the static eliminator 50 at this time is implemented by a conventionally known technique, and thus detailed description thereof will be omitted.

In addition, although the chamber 10 is not shown at one side thereof, a loading and unloading device for loading and unloading the circuit board p into the chamber 10 may be installed.

The elevating means 20 is provided inside the chamber 10 to provide an elevating driving force for elevating the clamping means 30, which will be described later, in the vertical direction.

The lifting means 20 may be proposed in various forms and structures as long as it has a structural feature capable of elevating the clamping means 30, but in the present invention, the driving force in the forward and reverse directions is supplied by receiving power from the outside. It proposes that it consists of the lifting motor 21 which produces | generates, and the guide shaft 23 by which the screw thread was processed in the outer peripheral surface as an output shaft of this lifting motor 21.

That is, the elevating motor 21 is installed on the bottom surface of the chamber 10, the guide shaft 23 is configured so that the front end thereof vertically facing the upper surface of the chamber 10, wherein the The guide shaft 23 has a structure in which one end thereof passes through the clamping means 30 while being screwed in. The structure of the guide shaft 23 interlocks with the clamping means 30 in the up and down directions when the guide shaft 23 rotates. The lift is linked. On the other hand, although not shown, the guide shaft 23 is a structure that is supported by a bearing or the like in the remaining sections except for the section in which the clamping means 30 is elevated.

The lifting means 20 configured as described above are disposed on both sides of the circuit board p, respectively.

The clamping means 30 is an elevating member that moves in the vertical direction along the guide shaft 23 of the elevating means 20. The various components are installed to guide the shaft of the elevating means 20. The main body 31 is screwed to the 23, and the suction bar 33 and the seat clamp 35 provided on one side of the main body 31.

The main body 31 is a member providing an installation space in which various components can be mounted. The main body 31 has a structure in which a through-hole (unsigned) having a spiral groove is formed on an inner circumferential surface in a direction perpendicular to one side thereof. The guide shaft 23 of the elevating means 20 is inserted into the screw fastening structure.

The main body 31 having such a configuration is arranged opposite to both sides with the circuit board p interposed therebetween, and the horizontal cylinder 32 for advancing and reversing the rod toward the circuit board p is fixed. . In this case, the horizontal cylinder 32 is a normal cylinder for driving the rod by receiving power or operating pressure from the outside, and has a structure in which a suction bar 33, a seat clamp 35, and the like, which will be described later, are mounted on one end of the rod.

The adsorption bar 33 is coupled to the rod of the horizontal cylinder 32 and is provided to be movable in the horizontal direction. The adsorption to the protective sheet s is performed by moving horizontally to the upper side of the circuit board p. It is provided by the member of the length member which has a hollow rod shape which implements.

Although not shown in the drawing, the suction bar 33 is connected to a vacuum pump (not shown) and a plurality of suction holes 33 ′ in which vacuum pressure is applied at equal intervals to a surface opposite to the circuit board p. In this case, the suction hole 33 'may be determined in consideration of the shape and size of the suction bar 33, the strength of the vacuum pressure, and the like.

On the other hand, the adsorption bar 33 in the present invention can be variously implemented by a known technique if it has a structural feature for performing vacuum adsorption on the protective sheet (s), and the detailed description thereof will be omitted.

The adsorption bar 33 having such a configuration acts on a vacuum pressure through a plurality of adsorption holes 33 ′ to adsorb the protective sheet s. In the present invention, the adsorption bar 33 is attached to the circuit board p. Since the upper end of the protective sheet s protrudes with a marginal surface, vacuum is adsorbed on the protruding portion.

The seat clamp 35 is rotatably installed on one side of the main body 31 so as to selectively close one surface of the suction bar 33. The seat clamp 35 has a predetermined length and is centered on the hinge h1. One end is a structure in which a semi-circular contact portion 35 'having a curvature corresponding to the curvature of the suction bar 33 is formed, and the other end is a vertical cylinder 37 installed in a direction perpendicular to the main body 31. It is a structure that can be connected to the load of.

That is, when the rod of the vertical cylinder 37 is protruded, the other end of the seat clamp 35 hinged thereto is interlocked and upwardly rotated around the hinge. As a result, one end of the seat clamp 35 is rotated downward so that the suction bar is rotated. While maintaining a pressurized state in close contact with the upper surface of the 33, the suction bar 33 is subjected to the pressure adhesion of the seat clamp 35 in a state of adsorbing a portion of the upper end of the protective sheet (s). do.

The seat clamp 35 configured as described above mechanically clamps one end of the protective sheet s together with the suction bar 33 to maintain a firm fixing state to the protective sheet s.

The clamping means 30 configured as described above is lowered by receiving the driving force of the elevating means 20 described above while the suction bar 33 and the seat clamp 35 are clamped on the protective sheet s. As a result, the protective sheet s attached to the circuit board p is peeled off.

The substrate holding means 40 is installed in the upper center of the chamber 10 so as to elevate and selectively bites and secures the upper end portion of the circuit board p. The elevating cylinder 41 and the tongs are large. It consists of 43.

That is, the elevating cylinder 41 is configured to be vertically mounted so that the rod is raised on the upper side of the circuit board p, the tongs of the elevating cylinder 41 is composed of a pair of tongs 43 ) Is configured. Here, the tongs 43 are configured to be connected to the actuator and operate as a member that performs biting to the circuit board p by being opened or retracted left or right.

The substrate holding means 40 of this configuration bites and fixes the exposed upper edge portion of the circuit board p when the above-described clamping means 30 descends while clamping one end of the protective sheet s. .

Looking at the operation of the protective sheet peeling device of the circuit board (p) configured as described above are as follows.

Referring to the initial state of the protective sheet peeling apparatus 1 of the present invention, as shown in Figure 1, the pair of the left and right disposed to facilitate the charging of the circuit board p from the outside The clamping means 30 maintains a state in which the clamping means 30 is moved upward to a position near the upper end side of the circuit board p. At this time, the suction bar 33 and the seat clamp 35 constituting the clamping means 30 are The position spaced apart from the circuit board p, that is, the retracted state is maintained. In addition, the substrate holding means 40 also maintains the state in which the forceps 43 are moved upward to avoid positional interference with the loaded circuit board, wherein the pair of forceps pieces constituting the forceps 43 are spaced apart from each other. Stay intact.

In this state, when the circuit board p having the protective sheet s attached to the outer surface of the chamber 10 is loaded, the horizontal cylinder 32 constituting the clamping means 30 moves the rod forward, As the rod moves forward, the adsorption bar 33 coupled to the tip end side thereof moves toward the protection sheet s so that the adsorption hole 33 'portion comes into contact with the protection sheet s.

Subsequently, when a vacuum pressure from the outside acts on the adsorption bar 33, vacuum adsorption is performed on the protective sheet s in which the adsorption hole 33 ′ is in contact, thereby maintaining a state as shown in FIG. 2. .

When the adsorption bar 33 performs vacuum adsorption on the protective sheet s as described above, the seat clamp 35 rotates to perform close pressure on the adsorption bar 33. That is, as shown in FIG. 3, when the vertical cylinder 37 advances and advances the rod, the seat clamp 35 rotates about the hinge h1 while interlocking with the semi-circular contact portion formed at one end thereof. 35 ') close-presses and clamps while covering the upper surface of the adsorption bar 33 which adsorb | sucked the protective sheet | s s.

Subsequently, the clamping means 30 is lowered by the lifting means 20. That is, when the elevating motor 21 constituting the elevating means 20 is rotated in one direction, the guide shaft 23, which is the output shaft thereof, is also rotated in one direction, and the guide shaft 23 is screwed on the outer circumferential surface. This machined screw shaft is a structure in which the main body 31 of the clamping means 30 is screwed together. Therefore, when the guide shaft 23 of the elevating means 20 rotates in one direction, the clamping means 30 descends and the protective sheet s of the circuit board p is peeled off.

On the other hand, at the time when the upper part of the circuit board p is peeled off, the substrate holding means 40 advances the rod of the lifting cylinder 41 downward so that the tongs 43 provided at the end thereof are lowered. Will be In this case, the tongs 43 are lowered in the state where the left and right tong pieces are spaced apart from each other, that is, the gaps between them. When the upper end of the circuit board p enters between these tong pieces, a pair of tong pieces are pinched together. While returning to the position in the direction as shown in Figure 4 to perform the bit fastening to the circuit board (p). The operation of the substrate holding means 40 is performed simultaneously with the lowering operation of the clamping means 30.

Finally, the clamping means 30 is peeled off to the protective sheet s of the circuit board p when the clamping means 30 moves downward along the guide shaft 23 of the elevating means 20 as shown in FIG. 5. The task is complete.

On the other hand, the present invention is not limited to the described embodiments, it is obvious to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to belong to the claims of the present invention.

The protective sheet peeling apparatus for a circuit board according to the present invention constructed and operated as described above includes a suction bar and a sheet clamp against an upper end of a protective sheet protecting an insulating layer of the circuit board when a flexible flexible circuit board of a thin plate is inserted into a chamber. Since peeling is performed by falling in a state where it is firmly clamped through, the standardization of work according to automation can be realized, and as a result, productivity and yield can be expected to be improved.

In particular, since the defect rate generated during the peeling operation by the existing manual work can be greatly reduced, it provides a very useful effect in the industry to improve the quality and reliability of the circuit board.

Claims (7)

A chamber in which a circuit board having a protective sheet attached to one surface thereof is vertically charged; Elevating means having a guide shaft installed vertically on one side of the chamber; A suction bar which is installed to move up and down along the guide shaft and is selectively moved horizontally to the upper side of the circuit board to perform suction, and a portion of the protective sheet that is adsorbed by a hinge installed on the upper side of the suction bar and selectively rotated. Clamping means having a seat clamp for clamping the bar closely; A substrate holding means installed on an upper side of the chamber and selectively clamping an upper end portion of the circuit board; Protective sheet peeling apparatus of a circuit board comprising a. The method of claim 1, wherein the lifting means, A lifting motor provided at one side of the chamber to selectively generate a driving force in the forward and reverse directions, the lifting motor having a guide shaft which is screwed on the outer circumferential surface and screwed to the clamping means; A protective sheet peeling apparatus of a circuit board, characterized in that. The method of claim 1, wherein the suction bar of the clamping means, A cylindrical member connected to a vacuum pump and a tube installed on one side of the chamber, the suction of the vacuum pressure is applied to the surface facing the circuit board at equal intervals is formed, the protection of the circuit board Sheet peeling apparatus. The method of claim 1, wherein the seat clamp of the clamping means, And a semi-circular arc-shaped contact portion having a curvature proportional to the curvature of the suction bar. The method of claim 1, wherein the clamping means, A main body formed with a through hole through which the guide shaft of the elevating means passes and disposed on opposite sides of the circuit board; A horizontal cylinder installed at one side of the main body and configured to move forward and backward in a horizontal direction to which the suction bar is coupled; A vertical cylinder installed at one side of the main body and having a rod hinged to an end of the main body so as to be interlocked with the protruding operation; Protective sheet peeling apparatus of the circuit board, characterized in that comprises a. The method of claim 1, wherein the substrate holding means, An elevating cylinder installed at an upper side of the chamber to selectively mount the rod to an upper side of the circuit board; Tongs installed at the rod end of the elevating cylinder and selectively bite the exposed upper and both sides of the circuit board by being opened or retracted left and right by an actuator; Protective sheet peeling apparatus of the circuit board, characterized in that comprises a. The method of claim 1, wherein the chamber, The protective sheet peeling apparatus of the circuit board, characterized in that the electrostatic eliminator for removing the static electricity generated when peeling off the protective sheet to the upper side of the clamping means is installed.

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